| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 1351 | Satwaria | Sihpur BO | 📍 845449 | Lauriya | Branch Post Office |
| 1352 | Sebia | Ghorpakari BO | 📍 845306 | Mainatanr | Branch Post Office |
| 1353 | Sehunrwa | Barwa Ojha BO | 📍 845452 | Jogapatti | Branch Post Office |
| 1354 | Semarbari | Kathar BO | 📍 845104 | Bhitaha | Branch Post Office |
| 1355 | Semari-Dumari | Ramnagar SO West Champaran | 📍 845106 | Ramnagar | Post Office - PO |
| 1356 | Semarkol | Borwal BO | 📍 845105 | Bagaha | Branch Post Office |
| 1357 | Sembhupur | Jamunia BO | 📍 845455 | Gaunaha | Branch Post Office |
| 1358 | Semra | Mahui BO | 📍 845103 | Ramnagar | Branch Post Office |
| 1359 | Semra | Harnatar BO | 📍 845105 | Sidhaw | Branch Post Office |
| 1360 | Semra | Sugauli BO | 📍 845455 | Narkatiaganj | Branch Post Office |
| 1361 | Semra Birit | Mathia Brit BO | 📍 845454 | Majhaulia | Branch Post Office |
| 1362 | Semra Labedaha | Naraipur SO | 📍 845105 | Bagaha | Post Office - PO |
| 1363 | Semra Medraul | Naraipur SO | 📍 845105 | Bagaha | Post Office - PO |
| 1364 | Semra Sirampur | Bhitiharwa Ashram BO | 📍 845455 | Gaunaha | Branch Post Office |
| 1365 | Semraghat | Sariswa Bazar BO | 📍 845454 | Majhaulia | Branch Post Office |
| 1366 | Semralabedaha | Semra Labedaha BO | 📍 845105 | Piprasi | Branch Post Office |
| 1367 | Semri | Gaunaha SO | 📍 845102 | Gaunaha | Branch Post Office |
| 1368 | Semri | Sathi BO | 📍 845449 | Narkatiaganj | Branch Post Office |
| 1369 | Semri | Nawalpur BO | 📍 845452 | Jogapatti | Branch Post Office |
| 1370 | Semri Bhawanipur | Nawalpur BO | 📍 845452 | Jogapatti | Branch Post Office |
| 1371 | Senduria | Mushahari BO | 📍 845450 | Chanpatia | Branch Post Office |
| 1372 | Senduria | Senwaria BO | 📍 845454 | Majhaulia | Branch Post Office |
| 1373 | Senuaria | Pindari BO | 📍 845306 | Mainatanr | Branch Post Office |
| 1374 | Senuariya | Mathia Kathia BO | 📍 845307 | Sikta | Branch Post Office |
| 1375 | Senuria | Senwaria BO | 📍 845454 | Bhitaha | Branch Post Office |
| 1376 | Serahwa | Jogia BO | 📍 845103 | Ramnagar | Branch Post Office |
| 1377 | Serahwa | Borwal BO | 📍 845105 | Bagaha | Branch Post Office |
| 1378 | Serahwa | Belwa Bahuari BO | 📍 845455 | Gaunaha | Branch Post Office |
| 1379 | Serahwa | Manwa Parsi BO | 📍 845455 | Gaunaha | Branch Post Office |
| 1380 | Serahwa | Serwa Masjidwa BO | 📍 845455 | Gaunaha | Branch Post Office |
| 1381 | Serhua | Jamunia BO | 📍 845455 | Gaunaha | Branch Post Office |
| 1382 | Serukahia | Siswania BO | 📍 845453 | Lauriya | Branch Post Office |
| 1383 | Serwa Don | Ramnagar SO West Champaran | 📍 845106 | Ramnagar | Post Office - PO |
| 1384 | Serwa Masjidwa | Narkaiaganj SO | 📍 845455 | Narkatiaganj | Post Office - PO |
| 1385 | Serwa Masjidwa | Serwa Masjidwa BO | 📍 845455 | Gaunaha | Branch Post Office |
| 1386 | Shahpur Parsuni | Ghorpakari BO | 📍 845306 | Mainatanr | Branch Post Office |
| 1387 | Shajahanpur | Belsandi BO | 📍 845455 | Gaunaha | Branch Post Office |
| 1388 | Shampur | Mathia Brit BO | 📍 845454 | Majhaulia | Branch Post Office |
| 1389 | Shampur | Shyampur Kotaraha BO | 📍 845459 | Nautan | Branch Post Office |
| 1390 | Shampur Kotraha | Shyampur Kotaraha BO | 📍 845459 | Nautan | Branch Post Office |
| 1391 | Shantinagar | Bettiah HO | 📍 845438 | Bettiah | Head Post Office - H |
| 1392 | Shekhpurwa | Taulaha Champaran BO | 📍 845455 | Ramnagar | Branch Post Office |
| 1393 | Sheorajpur | Sheorajpur BO | 📍 845438 | Nautan | Branch Post Office |
| 1394 | Sherpur | Serwa Masjidwa BO | 📍 845455 | Gaunaha | Branch Post Office |
| 1395 | Shikarpur | Shikarpur BO | 📍 845307 | Sikta | Branch Post Office |
| 1396 | Shikarpur | Shikarpur BO | 📍 845454 | Majhaulia | Branch Post Office |
| 1397 | Shiunaha | Champapur Gonauli BO | 📍 845107 | Bagaha | Branch Post Office |
| 1398 | Shivpurwa | Sigari Bigari BO | 📍 845106 | Ramnagar | Branch Post Office |
| 1399 | Shiwraha | Naurangia BO | 📍 845105 | Sidhaw | Branch Post Office |
| 1400 | Shiwrajpur | Shiorajpur BO | 📍 845452 | Jogapatti | Branch Post Office |